The bottom reference photos are from http://thedrawersblock.blogspot.com/ (except for chris chuas photo from his blog). An awesome blog that dan hay and ken knafou started also check out code 11 on kens blog it a great ongoing comic about kamans life and life as a caricature artist.
I still have have ambivalent feeling about doing retail caricatures. Ive been trying to mostly to kiss peoples ass on my in parks.
One of the few people actually doing real caricatures at universal is probably this guy http://worangejuice.blogspot.com/
In my opinion one of our most underrated and creative artist at universal. He just started doing airbrush about a month ago but man this guy is just picking it up like nothing, his stuff is really fun loose and full of energy and personality. This guy just keeps getting better.